CN213315054U

CN213315054U - Liquid-transfering gun

Info

Publication number: CN213315054U
Application number: CN202021858953.9U
Authority: CN
Inventors: 王秀国; 刘通; 朱凯; 黄弢; 乔丽丽; 刘云; 曹乐锋; 曹忠; 杨文文
Original assignee: Qingdao Agricultural Science And Technology Excellence Chemical Safety Technology Co ltd
Current assignee: Qingdao Agricultural Science And Technology Excellence Chemical Safety Technology Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-06-01
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses a liquid-transfering gun, concretely relates to chemical industry equipment technical field. The utility model discloses a rifle body, rifle lid and rifle head: the gun cover is arranged above the gun body; a PLC control system is arranged on the gun cover; a motor electrically connected with the PLC control system is arranged in the gun cover; a coupler is arranged below the motor; the shaft coupling is provided with a first shaft; a first bevel gear is mounted on the first shaft; two ends of the second shaft are arranged on the inner wall of the first cavity; a second bevel gear meshed with the first bevel gear is arranged on the second shaft; a cam is also hinged on the second shaft; the cam is propped against the roller hinged on the piston rod; the piston rod extends into the second cavity through the first cavity, and the lower end of the piston rod is provided with a plug head attached to the inner wall of the second cavity; the gun head is arranged on the gun nozzle below the gun body. The utility model provides a liquid-transfering gun can realize automatic control, reduces the manual operation and produces the error, and the ration is accurate, is convenient for shift a small amount or trace liquid.

Description

Liquid-transfering gun

Technical Field

The utility model belongs to the technical field of chemical industry equipment, concretely relates to liquid-transfering gun.

Background

Pipette guns are a type of pipettor commonly used in laboratories for the pipetting of small or minute quantities of liquids. Compared with the devices such as a pipette and the like, the device has higher accuracy and can greatly reduce experimental errors. At present, general liquid-transfering gun all is that manual operation carries out the absorption or the uninstallation liquid of liquid to need manually to adjust the volume of absorbing and uninstalling in the use, manual regulation is more loaded down with trivial details hard, can not quick adjustment to the scale of experiment demand, is a huge examination to user's proficiency and operating technique moreover.

In view of the above circumstances, there is a need for a pipette, which has the advantages of automatic control, reduced error caused by manual operation, and accurate quantification, and is convenient for transferring a small amount of or trace amount of liquid.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a liquid-transfering gun realizes automatic control, reduces the manual operation and produces the error, and the accurate purpose of ration is convenient for shift a small amount of or trace liquid.

The utility model provides a following technical scheme:

a liquid-transfering gun, includes rifle body, rifle lid and rifle head: the gun cover is arranged above the gun body; a PLC control system is arranged on the gun cover; the gun body comprises a first cavity and a second cavity; a motor electrically connected with the PLC control system is arranged in the gun cover; a coupler is arranged below the motor; one end of the coupler is mounted on a motor rotating shaft, and the other end of the coupler is provided with a first shaft arranged in the first cavity; a first bevel gear is mounted on the first shaft; two ends of the second shaft are arranged on the inner wall of the first cavity; a second bevel gear meshed with the first bevel gear is arranged on the second shaft; a cam is hinged to the second shaft; the cam is abutted to a roller hinged on the piston rod; the piston rod is also provided with a baffle; the spring penetrates through the piston rod and is arranged at the bottom of the first cavity and abuts against the baffle; the piston rod extends into the second cavity through the first cavity, and the lower end of the piston rod is provided with a plug head attached to the inner wall of the second cavity; the gun head is arranged on a gun nozzle below the gun body.

Preferably, one side of the gun body is provided with an unloading handle; the unloading handle can move in a groove on the gun body; a long hole is also formed in the groove; the unloading handle penetrates through the long hole to be connected with the unloading rod; the unloading rod passes through the first cavity and is arranged on the periphery of the second cavity.

Preferably, a fixing plate is further arranged in the first cavity; the fixed plate is provided with an unloading spring; the unloading spring is abutted against the unloading rod.

Preferably, a limiting ring is further arranged in the second cavity.

The utility model discloses a profitable effect:

the structure of the cam and the roller added in the gun body of the utility model enables the piston rod to move up and down along with the movement of the roller on the outline of the cam, thereby facilitating the choke plug to discharge the gas in the second cavity and absorb the liquid; the roller moves on the cam profile, so that the motion of the piston rod is more stable and accurate; the PLC control system arranged above the gun cover can control the rotating speed and the running time of the motor and realize automatic control, and the PLC control system can set the liquid inlet amount of the gun head by setting the running time of the rotating rod of the motor so as to realize the aim of accurately controlling the liquid preparation amount; the baffle and the spring are arranged on the piston rod, so that the piston rod can be restored to an initial state under the action of the spring after the liquid-transferring gun is used, and the liquid-transferring gun is convenient to use next time; the unloading rod added can drive the unloading handle to move to pop up the gun head on the gun nozzle, so that the gun head can be removed more cleanly and conveniently. The utility model discloses accomplished and to have realized automatic control, reduced manual operation production error, the ration is accurate, is convenient for shift a small amount or trace liquid.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of the position of the piston of the present invention at the maximum stroke;

fig. 3 is a schematic view of the cam installation of the present invention.

Description of reference numerals:

1. a gun body; 2. unloading the rod; 3. unloading the spring; 4. a fixing plate; 5. a first cavity; 6. a piston rod; 7. a gun nozzle; 8. a second cavity; 81. a limiting ring; 9. a spring; 10. a baffle plate; 11. a roller; 12. a cam; 13. a first shaft; 131. a first bevel gear; 132. a second bevel gear; 133. a second shaft; 14. a coupling; 15. a motor; 16. a PLC control system; 17. a gun cover; 18. unloading the handle; 19. and (4) a groove.

Detailed Description

As shown in the figure, the liquid-transfering gun comprises a gun body 1, a gun cover 17 and a gun head: the gun cover 17 is arranged above the gun body 1; a PLC control system 16 is arranged on the gun cover 17; the gun body 1 comprises a first cavity 5 and a second cavity 8; the gun cover 17 is internally provided with a motor 15 electrically connected with the PLC control system 16, and the volume of liquid to be transferred can be set through the PLC control system 16 and correspondingly converted into the running time of the motor 15.

A coupling 14 is arranged below the motor 15; one end of the coupler 14 is arranged on a rotating shaft of the motor 15, and the other end of the coupler is provided with a first shaft 13 arranged in the first cavity 5; a first bevel gear 131 is mounted on the first shaft 13; two ends of the second shaft 133 are arranged on the inner wall of the first cavity 5; a second bevel gear 132 meshed with the first bevel gear 131 is arranged on the second shaft 133; the second shaft 133 is also hinged with a cam 12; the cam 12 is pressed against the roller 11 hinged on the piston rod 6; the piston rod 6 is also provided with a baffle 10; the spring 9 is arranged at the bottom of the first cavity 5 through the piston rod 6 and is propped against the baffle 10; the piston rod 6 passes through the first cavity 5 and extends into the second cavity 8, and the lower end of the piston rod 6 is provided with a plug head attached to the inner wall of the second cavity 8; the gun head is arranged on a gun nozzle 7 below the gun body 1; after the motor 15 is started by the PLC control system 16, the motor 15 operates to drive the first shaft 13 to operate, so that the first bevel gear 131 on the first shaft 13 is meshed with the second bevel gear 132 to drive the cam 12 on the second shaft 133 to rotate, the roller 11 on the piston rod 6 is always attached to the outline of the cam 12 under the action of the spring 9, the cam 12 operates to move, the roller 11 moves on the outline of the cam 12 to drive the piston rod 6 to move up and down, and the plug head of the piston rod 6 moves to discharge gas in the second cavity 8 and suck liquid to be transferred.

A limiting ring 81 is further arranged in the second cavity 8, the position of the limiting ring 81 is the initial position of the plug head of the piston rod 6, and when the plug head starts to move to the bottom of the second cavity 8 at the initial position, all gas in the gun head can be discharged. After the liquid transferring gun transfers liquid, the motor 15 can be started to rotate reversely through the PLC control system 16, so that the plug head of the piston rod 6 moves to the position of the limiting ring 81 to return to the initial state, and the liquid transferring gun is convenient to reuse.

One side of the gun body 1 is provided with an unloading handle 18; the unloading handle 18 can move in a groove 19 on the gun body 1; a long hole is also arranged in the groove 19; the unloading handle 18 passes through the long hole and is connected with the unloading rod 2; the unloading rod 2 passes through the first cavity 5 and is arranged at the periphery of the second cavity 8; a fixed plate 4 is also arranged in the first cavity 5; the fixed plate 4 is provided with an unloading spring 3; the unloading spring 3 is against the unloading lever 2. After the liquid transfer of the liquid transfer gun is finished, the unloading handle 18 can be pressed to drive the unloading rod 2 to move, and the gun head on the gun nozzle is ejected.

The utility model discloses a working method: holding a liquid transfer gun, aligning a gun nozzle 7 with a gun head for installation, inputting the volume of liquid to be transferred on a PLC (programmable logic controller) control system 16, starting a motor 15 to operate, enabling a plug head of a piston rod 6 to extrude gas in the gun head, enabling the motor 15 to continue to operate for a set time according to the volume of the liquid to be transferred, and simultaneously enabling the plug head to move to a set stroke to absorb the liquid to be transferred; moving the device to a discharging position, starting the motor 15 again to enable the plug head to move downwards, discharging all the sucked liquid, and finishing the transfer of a small amount of or trace liquid; the starting motor 15 is reversely rotated, so that the plug head of the piston rod 6 moves to the position of the limiting ring 81 and the initial state is recovered; the unloading handle 18 is pressed to pop up the gun head, so that the next use of the liquid-transferring gun is facilitated.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a liquid-transfering gun, includes rifle body (1), rifle lid (17) and rifle head, its characterized in that: the gun cover (17) is arranged above the gun body (1); a PLC control system (16) is arranged on the gun cover (17); the gun body (1) comprises a first cavity (5) and a second cavity (8); a motor (15) electrically connected with a PLC control system (16) is arranged in the gun cover (17); a coupling (14) is arranged below the motor (15); one end of the coupler (14) is mounted on a rotating shaft of the motor (15), and the other end of the coupler is provided with a first shaft (13) arranged in the first cavity (5); a first bevel gear (131) is mounted on the first shaft (13); two ends of the second shaft (133) are arranged on the inner wall of the first cavity (5); a second bevel gear (132) meshed with the first bevel gear (131) is arranged on the second shaft (133); a cam (12) is hinged on the second shaft (133); the cam (12) is abutted to a roller (11) hinged on the piston rod (6); the piston rod (6) is also provided with a baffle (10); the spring (9) penetrates through the piston rod (6) and is arranged at the bottom of the first cavity (5) and is abutted against the baffle plate (10); the piston rod (6) penetrates through the first cavity (5) and extends into the second cavity (8), and a plug head attached to the inner wall of the second cavity (8) is installed at the lower end of the piston rod (6); the gun head is arranged on a gun nozzle (7) below the gun body (1).

2. The pipette gun of claim 1, wherein: an unloading handle (18) is arranged on one side of the gun body (1); the unloading handle (18) can move in a groove (19) on the gun body (1); a long hole is also formed in the groove (19); the unloading handle (18) penetrates through the long hole and is connected with the unloading rod (2); the unloading rod (2) passes through the first cavity (5) and is arranged on the periphery of the second cavity (8).

3. The pipette gun of claim 1, wherein: a fixed plate (4) is also arranged in the first cavity (5); the fixed plate (4) is provided with an unloading spring (3); the unloading spring (3) is pressed against the unloading rod (2).

4. The pipette gun of claim 1, wherein: and a limiting ring (81) is also arranged in the second cavity (8).